Method for transmitting and receiving signals in wireless LAN system and apparatus therefor
AssigneeLG Electronics Inc.
InventorsSunwoong Yun, Jinmin Kim, Sungjin Park, Jinsoo Choi
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Abstract
The present specification relates to a method for transmitting and receiving signals in a wireless local area network (WLAN) system and an apparatus therefor, the method comprising the steps of: generating a training sub-field consisting of a certain number of orthogonal frequency division multiplexing (OFDM) symbols; and transmitting, to a second STA, a signal including a header field and the training sub-field, wherein the transmitted signal is repeatedly transmitted T times (where T is a natural number) on the basis of information indicated by the header field after a data field.
Claims12
A method in a wireless local area network (WLAN) system, the method performed by a transmitting station (STA) and comprising:
- generating a training (TRN) subfield based on a basic TRN subfield,
- wherein:
- the basic TRN subfield is configured for at least one transmit (TX) chain,
- the basic TRN subfield is configured based on a first sequence, a zero sequence being contiguous to the first sequence and a second sequence being contiguous to the zero sequence,
- the first and second sequences have a same number of elements, and
- the zero sequence is configured based on {0, 0, 0};
- and
- transmitting an Orthogonal Frequency Division Multiplexing (OFDM) physical protocol data unit (PPDU) including a header field and a TRN field to a receiving STA,
- wherein:
- the TRN field starts with T repetitions of the TRN subfield,
- T denotes a non-zero positive integer,
- the header field includes a length field related to the TRN subfield
- the TRN subfield is determined to be one of a short TRN subfield, a normal TRN subfield and a long TRN subfield based on the length field,
- the short TRN subfield is configured based on 1 repetition of the basic TRN subfield,
- the normal TRN subfield is configured based on 2 repetitions of the basic TRN subfield, and
- the long TRN subfield is configured based on 4 repetitions of the basic TRN subfield.
A transmitting station (STA) in a wireless local area network (WLAN) system, comprising:
- a transceiver having one or more Radio Frequency (RF) chains and transmitting signals to a receiving STA;
- and
- a processor coupled to the transceiver and configured to:
- generate a training (TRN) subfield based on a basic TRN subfield,
- wherein:
- the basic TRN subfield is configured for at least one transmit (TX) chain,
- the basic TRN subfield is configured based on a first sequence, a zero sequence being contiguous to the first sequence and a second sequence being contiguous to the zero sequence,
- the first and second sequences have a same number of elements, and
- the zero sequence is configured based on {0, 0, 0};
- and
- transmit an Orthogonal Frequency Division Multiplexing (OFDM) physical protocol data unit (PPDU) including a header field and a TRN field,
- wherein:
- the TRN field starts with T repetitions of the TRN subfield,
- T denotes a non-zero positive integer,
- the header field includes a length field related to the TRN subfield
- the TRN subfield is determined to be one of a short TRN subfield, a normal TRN subfield and a long TRN subfield based on the length field,
- the short TRN subfield is configured based on 1 repetition of the basic TRN subfield,
- the normal TRN subfield is configured based on 2 repetitions of the basic TRN subfield, and
- the long TRN subfield is configured based on 4 repetitions of the basic TRN subfield.
Dependencies are inferred from the claim text.